On the 20th of December, Howe, announcing to the Ministry that he had gone into winter-quarters, wrote: "The chain, I own, is rather too extensive, but I was induced to occupy Burlington to cover the county of Monmouth; and trusting to the loyalty of the inhabitants, and the strength of the corps placed in the advanced posts, I conclude the troops will be in perfect security." Of this unwarranted security Washington took prompt advantage.

On Christmas night a sudden descent, in a blinding snow-storm, upon a British outpost at Trenton, swept off a thousand prisoners; and although for the moment the American leader again retired behind the Delaware, it was but to resume the offensive four days later.

Cornwallis, who was in New York on the point of sailing for England, hurried back to the front, but in vain.

A series of quick and well-directed movements recovered the State of New Jersey; and by the 5th of January the American headquarters, and main body of the army, were established at Morristown in the Jersey hills, the left resting upon the Hudson, thus recovering touch with the strategic centre of interest.

This menacing position of the Americans, upon the flank of the line of communications from New York to the Delaware, compelled Howe to contract abruptly the lines he had extended so lightly; and the campaign he was forced thus reluctantly to reopen closed under a gloom of retreat and disaster, which profoundly and justly impressed not only the generality of men but military critics as well.